4583 Datasheet, PDF (30/153 Pages) Renesas Technology Corp – SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER

4583 Group
PRELIMINARY
Notice: This is not a final specification.
Some parametric limits are subject to change.
Table 9 Function related timers
Circuit
Structure
Count source
Prescaler
Timer 1
Timer 2
Timer 3
Timer 4
Watchdog
timer
8-bit programmable • Instruction clock (INSTCK)
binary down counter
8-bit programmable • Instruction clock (INSTCK)
binary down counter • Prescaler output (ORCLK)
(link to INT0 input)
• XIN input
(period/pulse width • CNTR0 input
measurement function)
8-bit programmable • System clock (STCK)
binary down counter • Prescaler output (ORCLK)
• Timer 1 underflow
(T1UDF)
• PWM output (PWMOUT)
8-bit programmable • PWM output (PWMOUT)
binary down counter • Prescaler output (ORCLK)
(link to INT1 input)
• Timer 2 underflow
(T2UDF)
• CNTR1 input
8-bit programmable • XIN input
binary down counter • Prescaler output (ORCLK)
(PWM output function)
16-bit fixed dividing • Instruction clock (INSTCK)
frequency
Frequency
dividing ratio
1 to 256
1 to 256
1 to 256
1 to 256
1 to 256
65534
Use of output signal
• Timer 1, 2, 3, amd 4 count sources
• Timer 2 count source
• CNTR0 output
• Timer 1 interrupt
• Timer 3 count source
• CNTR0 output
• Timer 2 interrupt
• CNTR1 output control
• Timer 3 interrupt
• Timer 2, 3 count source
• CNTR1 output
• Timer 4 interrupt
• System reset (count twice)
• WDF flag decision
Control
register
PA
W1
W2
W5
W2
W3
W4
Rev.3.00 Aug 06, 2004 page 30 of 151
REJ03B0009-0300Z